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Gravity Load Data <br /> Panel Data <br /> Panel: Heliene 60M-HBLK <br /> Number of Modules: 39 <br /> Weight of PV Module 43.90 Ibs <br /> PV Module Dimensions L= 65.00 in <br /> W= 39.00 in <br /> Roof Data <br /> Roof Material:Asphalt Shingle <br /> Roof Dead Load QD= 10 psf <br /> PV System Dead Load Qpv= 3 psf <br /> Framing Spacing Sroof= 24 in <br /> Linear Dead Load wD—(QD+Qpv)*s,,f= 26 plf <br /> Lag Screw Check Lumber: DF-L No.2 <br /> Uplift Demand <br /> Design Wind Pressure p= -48.5 psf(Zone 2) <br /> Trib. Depth for Each Rail dpv=U2= 2.71 ft <br /> Trib. Depth for Each Rail bpv=W/2= 1.63 ft <br /> Screw Anchor Spacing Spv= 4.00 ft(max.) <br /> Uplift Force on Each Screw, Portrait UL=(p+Qpv)*dpv*spv= 493 Ibs(Upwards) <br /> Uplift Force on Each Screw,Landscape UW=(p+Qpv)*by *spv= -296 Ibs(Upwards) <br /> Design Uplift Force Paplift=0.6*[Max(UL, UW A= -296 Ibs(Upwards) <br /> Uplift Capacity <br /> NDS 2015 Adjustment Factors <br /> CD= 1.6 CM= 1 Ct= 1 SG= 0.50 Co, Ceg, C9, Cdi, Ctn are not appicable <br /> Speicfic Gravity of Lumber SG= 0.55 NDS Supplement Table 4a <br /> Diameter of Lag Screw D= s/is in <br /> Withdraw Design/in 1800*SG32*D;"4= 307 Ibs/in NDS 2015 12.1-1 <br /> Depth of Embeddment Ip= 2.50 in <br /> Total Nominal Withdrawal Value W=W*I p= 767 Ibs <br /> Withdrawal Design Vaule W=W*CD*CM*Ct= 1227 Ibs NDS 2015 Table 11.3.1 <br /> Demand-Capacity Ratio Puplift W'= 0.24 < 1 [OKAY] <br />